Pitman or pump rod



(No Model.)

' J. F. LOOMIS.

PITMAN 0R PUMP ROD. 110.371,895. 1 Patented 0013. 18, 1887.

A WITNESSES:

ATTURNBYS.

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Uniienn diaree amer Ormea JOIIN FAY LOOMIS, OF SHELBY, IO`WA.

PITlVlAN OR PUMP ROD.

SPCIFCATION forming part of Letters Patent No. 371,895, dated October18, 188?.

Application {ilod August 6, 1887. Serial Noi 246,364. (No model.)

To @ZZ whom it may concern:

Beit known that I, JOHN FAY LooMIs, of Shelby, in the county ot' Shelbyand State of Iowa, have invented a new and useful Improvement in Pitmanor Pump Rods, of which the following is a specification.

My invention relates to the pitman or pump rod shown and described in myprevious patent, No. 364,423, which was constructed so -as to be elasticin the direction of its length by the intel-position ofa spring, wherebyit was made to take up strains and jars and cause ashorter stroke forthe piston in proportion to the increased speed of the wheel.

My present invention is designed to provide a better spring-coimection;and to thisend it consists in the peculiar construction and arrangementof parts, which I will no'w proceed to describe in connection with thedrawings, in which- Figure l is a side view of my invention; Fig. 2, anenlarged cross-section through line x as of Fig. l. Fig. 3 is aperspective view of a modified form of my invention; and Fig. 4 is adetail view showing another modification.

A A represent the two adjacent-ends of the pumprod, between which thespring-connection is interposed. This connection consists of foursprings, B B B B', each of which is ofthe same pattermand consists of afflat steel bar bent with a rgradual turn or curve, so as to allow itsbranches to stand at right angles to each other. One set of ends of thesprings B B are bolted together through the section A of the pump-rod bybolts E, and one set of ends of the springs B B are bolted togetherthrough the section A of the pump-rod by bolts E. The branches of thesprings projecting at right angles to the pump-rod are nowconnectedtogether by spacing-blocks C, of hard wood or other material, and yokeyshaped clamps a, which embrace the ends of the springs on each side ofthe rod, and also the spacing-blocks. These yokes or clamps havescrew-th readed ends, which pass through holes in a cross bar or plate,D, and are secured thereto by screw-nuts b on the outside, by turningwhich up tightly in place the springs and spacing-blocks are tightlyclamped together.

Now, When a reciprocation is imparted to the pump-rod by the wind-wheel,it will be seen that the springs make the stroke elastic, and thesprings upon one side balance those upon the other, so that no guidesare required. To Vary the elasticity of' this vspring-connection, it isonl y necessary to adjust the clamps and spacing-blocks farther from orcloser to the pump-rods, a close adjustment making a stift' spring and aremote one making a limber one.

If desired, the springs B B may be made in one piece, as shown in Fig.3. I may also use, in connection with the springs B and B', additionalor supplemental springleaves, as shown r in Fig. 4.

Having thus described my invention, what I claim as new isl. Thecombination, with the two sections of pump-rod, of the rightangularsprings arranged upon both sides ofthe rod, and clamps andspacing-blocks arranged between the portions of the springs which are atright angles to the rod, as shown and described.

2. The combination, with the two sections of pump-rod, of the fourright-angularly-bent springs having one set of ends bolted to therod-sections and the other set projecting at right angles, and thespacing-blocks and clamps connecting these right angularly projectingends, substantially as and for the purpose described.

JOHN FAY LOOMIS.

Vitncsses:

C. G. SANFORD, S. l?. SILLIMAN.

